Pulp-screening machine.



PATENTED JUNE 5, 1906.

'iNo..822,59 9.

L: W.-GO0DRIGK. PULP SCREENING MACHINE.

APPLIQATION FILED FEB. 19. 1906.

4 SHEETSSHEET 1.

(145 6 434 W PQL PATENTED JUNE 5, 1906.

' E. w. GOODRIGK.

PULBSGRBENING MACHINE. nrucuxon rILBfi rm. 19. 1996.

v4 SHEETS-SHEET 3.

'5 av i mlllll hereby declare that FEE TATESEAE OF ONE'HALF TO APPLETONWISCONSIN.

MACHINE COMPANY, OF APPLETON,

PULP-:SCREENING Mam-ems.

Specification of Letters Patent.

Patented June niece.

Application filed February 19, 1908. Serial No. 301,841.

To aZZ whom it may conceive:

Be it known that I, EDWARD WILLIAM Goonnrox, a citizen of the UnitedStates,-

and a resident of Appleton, in the county vof.Outagamie and State ofWisconsin, have invented certain new and useful Improvements inPulp-Screening Machines; and I do the following is a full, clear, andexact description thereof.

My invention has for its obj eat to im rove the efficiency of thesimple, economica an durable pulp-screening machines set forth in myPatent No. 815,421, granted March 20, 1906, said invention consistin inwhat is herein shown, described, and c aimed.

Figure 1 of the accompanying drawings represents a side elevation of myimproved pulp-screening machine, partly in section; Figs. 2 and 3,transverse sectional views of the machine, respectively indicated bylines 2 2' and 3 3 in Fig. 1 and Fig. 4, a plan view of aid machine,partly in horizontal section.

Referring by letter to the drawings, A indicates each of a pluralityofstandards connected to a girth B, and a frame C is bolted or otherwiserigidly secured on the standards Surmounting the girth, as shown in thepatent aforesaid, or cast in one piece with the same, as herein shown,is an oil-box D, provided with bearings for a driven shaft E, and faston this shaft at suitable intervals there-i of-are cams F, opposingfriction-blocks G, that are each in connection with a coupling H,attached to one end of a horizontal springbar I, the other end of thisbar being clamped iii-connection with the upper extremity of an inclinedarm J, made fast at its lower extrem- -ity'to a side of the girthaforesaid. The arm J is herein shown provided with a lug b, that engagesa notch in an edge of the oil-box, and socketed in said arm-lug is thelower end of a .rod K, that extends through'the coupling and springbaraforesaid. Arranged on the rod against the coupling is a spiral s andthe tension of the spring is regu ated by a nutc on the screw-threadedupper end of 'i said rod against an interposed washer d, the

construction and arrangement of parts thus far described and a pitman Hin connection with each coupling being similar to what is set forth inthe previous application as being common in the art to which myimprovements relate.

of the pans.

Bolted or otherwise fastened to the upper end of each pitman H is adepending center shank e of a pan M, having parallel under ribs f,bolted or otherwise secured to spring stay bars N, that are fastened attheir ends to back-lugs of flow-chambers O in the frame O aforesaid. Asstated in the former application, spring stay-bars in connection with sad frame and a vibratory device are common in the art but theflow-chambers hereinafter more particularly described are novel featuresof the improved machine. in con.3unc tion with the pan that constituted,an espetial feature of the predecessor machine and which is the same insaid improved machine, except as to details herein specified. Eachpan-is preferably recessed at each end to provide a pulp-outlet gtherefrom at a suitable elevation above the bottom; but it may be 'madewith but one such outlet at the pre ferred end thereof. Each elevatedoutletend portion of the pan straddles theanner upper edge of aflow-chamber O to insure against loss of pulp over the inner upper ed eof saidhamber, and, as in the former app 1- cation, the bottom of eachpan is provided with an endless inner flange it, having the functionhereinafter specified.

As in the patent aforesaid, a screen-frame P is supported on the frame Cof the machme, and a pulp-vat Q rests upon said screenframe. Likewise,partly inclined and partly vertical endless flanges s of thescreen-frame depend into the underlying pans below the outlets of same,preferably outside the inner bottom flanges h of said pans, and saidscreenframe is also provided with depending bars t, notched to giveclearance for the flanges h The screen-plates R are fastened to theends, sides, bars 15, and divisionbars a of their supporting-frame P byscrews or other suitable means the same as in the former application.

The bottoms of the pans of the improved machine are beveled at the sidesand provided with depending flanges c, that extend down into troughsarranged transversely of the machine. The troughs S at .the ends of themachine are shallow andcommunicate with flowchambers, and the remainingdeeper troughs T are each arranged between a pair of pans, all of saidtroughs being-suitably pitched. The troughs T discharge into a flow-boxO,

in bolt connection with the machine-frame at one side of same, andanother flow-box U, of less dimensions than the one aforesaid, is shownin similar connection with the opposite side of said machine-frame. Thebottom of the flow-box U is at a higher level than that of the flow-boxO and in communication with the troughs T aforesaid. The ends of thesetroughs extend through apertures in the sides of the machine and aresuitably packed therein to prevent leakage from the flow-boxes. Outerhook-brackets i of the pulp-vat Q engage links it in connection with eebolts m, that extend through upper outer ug extensions n of the troughsT, and clamp-nuts p are run on the bolts to oppose the lugs.

In practice water is run through the screens ahead of the pulp toaccumulate in the pans to a depth that will form a seal between saidpans and the depending flanges e of the screen-frame, and verticalvibration is imparted to the aforesaid pans by rotation of the shaft Eof themaclnne. Pulp from the vat is sucked through the screensincidental to downward motion of the pans, and reaction is had on thepul in said vat incidental to upward. motion of said ans to prevent saidscreens from clogging, ackflow of pulp from'the space between thepan-walls and depending flanges of the screen-frame being retarded bythe flan es h on the bottoms of the aforesaid pans, a l as described. inthe application aforesaid. The depth of the material in'the pans may beincreased to a variable degree by suitable damniing of the outlets ofsaid pans.

The machine herein set forth is of the plurel-pan variety in which it isadvantageous to discharge the screened pulp from the ends of the pansinto flow-chambers having lower outlets into the flow-boxes adjacent tothe bottoms of same, whereby provision is had for a smooth continuousflowage without agitel-tion of the'material accumulating in saidiip'wboxes. Another advantage of the flowlltamb ers is to give air anopportunity to es cape from the screened material, this air havingmingled with said material while the same w ts being drawn through thescreen-plates by the action of the vibratory pans.

Due to agitation of the pulp in the vibratory ans when the machine isrunning there is sp ash or spraying of the material against the underside of the screen-frame, and in the absence of the transverse troughs ST some of this material will be lost because of drip of the sameoutsideof the pans to the floor upon which the machihe is set. In the improvedmachine the material caught in the troughs finds its way to the flow-box0 either through flow-chambers in communication with the troughs Sordirect through the troughs T,

eeasee being kept about two-thirds full of stock. It is practical andwithin the scope of my invention to omit the flow-box U and have one Oaforesaid. It also follows that the machine may be of the one-panvariety and. organiz-ed to have all the advantages of the lural-pan typeof machine'herein particuarly described whether of the two" or singleflow box type, provision being had for col? lecting into flow-troughsthe material that would be otherwise wasted by splashing or sprayingagainst the under side of the screenframe to drop clear of the sides ofthe pan.

1. In a pulp-screening machine, a vertical vibratory pan provided withone or more outlets, a screen-frame having an endless flange dependininto the pan, and flowtroughs arranger to catch material splashed orsprayed from the pan.

2. In a pulp-screening machine, a vertically-vibratory pan having aninner endless bottom flange and rovided with one or more flangedepending into the pan adjacent to said bottom flange of same, andflow-troughsarranged tocatchmaterialsplashedorsprayed from the pan.

3. In a pulp-screening machine, a vertically-vibratory pan provided withone or more outlets at a suitable elevation above its bottom, ascreen-frame having an endless flange depending into the an below theoutlet or outlets of same, an to catch material splashed or sprayed fromthe pan.

4. In a pulp-screening machine, a vertically-vibratory pan having aninner endless flange on its bottom, and rovided with one or more outletsat a suitab e elevation above its bottom, a screen-frame havinglanendless flange de ending into the p an below the outlet or out ets ofthe same; adjacent totthe b0t tom flange thereof, and flow-troughsarranged to catch material splashed. or splrayed frlom' the pan.

flow-troughsarranged 5. In a pulp-screening machinei'a plurality ofvertically-vibratory pans each 1 rovidedj with one or more outlets aboveits b ttom, a screen-frame having a plurality of. endlessl flanges eachof which depends into a pan be-; low the outlet or outlets of same, andflowtroughs arranged to catch material splashed or sprayed from thepans.

6. .In a pulp-screening machine, a plurality of vibratory pans eachprovided with one or more outlets above its bottom and having an endlessinner flange on said bottom, a screenframe havin a plurality of endlessflanges each of whic depends into a pan below the uoutlet or outlets ofsame adjacent to the bottom flange thereof, and flow-troughs ar-- l moreoutlets, 'a 1 o" ranged, to catch material splashed or sprayed fromthe'pans.

a pulp-screening machine, a vertically-,vibratoi'y flpan r'ovided withone or ow-c amber arran ed to recelve m'ate'rialk'from each outlet thepan and of itself provided with a lower outlet into a flow b'ox, and ascreen-frame having an endless'flange depending into the pan.

a pizlp-screening machine, a verti- ;cally-v1bratory pan provided withone or more outlets and an inner endless bottom flange, a flow-chamberarranged to receive or sprayed from the pan.

the material from each outlet of the pan and of itself provided with alower'outlet into av flow-box, and a screen-frame having an endlessflange depending into the pan adjacent to 10. In' apulp-screeningmachmd-a vertically-vibratory pan provided with one ormore outlets and an innerendless bottom flange,- a flow-chamber arrangedto receive the material from each outlet of the pan and of itselfprovided with a lower outlet into a flow-box, a screen-frame having anendless flange depending into the pan adjacent to said bottom flange ofsame, and flow-troughs arranged tocatch material splashed or sprayedfrom the pan. v

11. In a pulp-screening machine, a vertically-vibratory an havingelevated outlet. ends and depen ing side flanges, flow-chambers havingup er edges thereof straddled by said outlet en s of the pans,flow-troughs in which said side flanges of the pans have lay, and ascreen-frame having an endless fl dnge depending into the pan. 12. In apulp-screening'machine, a lurality of vertically-vibratory pans eachaving elevated outlet ends and depending side flanges, flow-chambershaving upper edges thereof straddled by the outlet ends of the ans,flow-troughsin which said side flan es iave play, and a screen-framehaving a p u- 'rality of endless flanges each of which depends into apan below the outlets of same, 13. In a pulp-screening machme, avertimaterial from the an-outlets, opposite flowflow-troughscommunicating with the flowning int-othe pans below their outlets andadcally-vibra'tory pan having elevated outlet.

ends, depending side flanges and an endless inner flange on its bottom;flow-chambers having upper edges thereof straddled by the outlet ends ofthe an, flow-troughs in whlch said side flan es of screen-frame avingendless flanges depending into the pan adjacent to said bottom flangethereof and below the outlets of same. 14. In a pulp-screening machine,a lural ity of vertical vibratory pans each navmg elevated outlet ends,depending side flanges and an endless inner flange on its bottom;flow-chambers having upper edges thereof straddled by the outlet endsofthe pans, flow-troughs in which said side flanges of the pans have play,screen-frames having endess flanges depending into the pans adjacentto'said bottom flanges thereof and below the outlets of same. I

15. In a pulp-screening machine a l'urality of vertically-vibratorypanseach aving end outlets, flow-chambers arranged to receive material fromthe Jan-outlets, o osite flow-boxes longitudinal y of the mac me atdifferent levels and with which the flowohamberscommunicate, transverseflowtroughs connecting the flow-boxes, other transverse flow-troughscommunicatin with flow-chambers, the arrangement of al the flow-troughsbeing such as to catch material splashed or s rayed from the pans, and ascreen-frame aving an endless flange depending into the pans belowtheoutlets of same. I

16. In a pulp-screening machine a plurality of verticallywibrat'orypans, each having an end outlet, and an inner endless bottom flange;flow-chambers arranged to receive boxes longitudinal y of the machine atdifferent levels and with which the flow-chambers communicate,transverse flow-troughs connecting the flow boxes, other transversechambers, the arrangement of all the flowtroughs being such as to catchmaterial splashed or sprayed from the pans, and a screen-frame havlngendless flanges dependj acent to their inner endless bottom flanges.

In testimony that I claim the foregoing I havehereunto set my hand, atAppleton, in the county of Outagamie and State of Wisconsin, in thepresence of two witnesses.

EDWARD WILLIAM GOODRICK.

the pan have play, and a

